EP 0687018 A3 19960424 - Device for emitting electrons
Title (en)
Device for emitting electrons
Title (de)
Vorrichtung zur Emission von Elektronen
Title (fr)
Dispositif pour émission d'électrons
Publication
Application
Priority
- JP 10388194 A 19940518
- JP 6608095 A 19950324
- JP 6619095 A 19950324
- JP 12757695 A 19950428
Abstract (en)
[origin: EP0687018A2] A device (21) comprising a conductor (22) and an emitter electrode for emitting electrons formed on the conductor, the emitter electrode including a mass (27) of a plurality of columnar crystals (28) each containing beta -tungsten and having a sharpened tip end portion (28a) for emitting electrons, the plurality of columnar crystals (28) being put in contact with one another. <IMAGE>
IPC 1-7
IPC 8 full level
H01J 1/304 (2006.01); H01J 9/02 (2006.01)
CPC (source: EP US)
H01J 1/304 (2013.01 - EP US); H01J 9/022 (2013.01 - EP US); H01J 2201/30403 (2013.01 - EP US); H01J 2329/00 (2013.01 - EP US)
Citation (search report)
- [XA] EP 0452950 A2 19911023 - HITACHI LTD [JP], et al
- [XA] US 3671798 A 19720620 - LEES WAYNE L
- [A] US 3755704 A 19730828 - SPINDT C, et al
- [A] US 5066883 A 19911119 - YOSHIOKA SEISHIRO [JP], et al
- [PX] PATENT ABSTRACTS OF JAPAN vol. 018, no. 551 (E - 1619) 20 October 1994 (1994-10-20)
- [PX] PATENT ABSTRACTS OF JAPAN vol. 018, no. 551 (E - 1619) 20 October 1994 (1994-10-20)
- [A] PATENT ABSTRACTS OF JAPAN vol. 016, no. 233 (E - 1209) 28 May 1992 (1992-05-28)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0687018 A2 19951213; EP 0687018 A3 19960424; EP 0687018 B1 20030219; DE 69529642 D1 20030327; DE 69529642 T2 20031204; US 5903092 A 19990511
DOCDB simple family (application)
EP 95107565 A 19950517; DE 69529642 T 19950517; US 44332095 A 19950517